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><H1
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NAME="V4L2-PIX-FMT-YUV422P"
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>V4L2_PIX_FMT_YUV422P ('422P')</H1
><DIV
CLASS="REFNAMEDIV"
><A
NAME="AEN5158"
></A
><H2
>Name</H2
><CODE
CLASS="CONSTANT"
>V4L2_PIX_FMT_YUV422P</CODE
>&nbsp;--&nbsp;Format with &frac12; horizontal chroma resolution,
also known as YUV 4:2:2. Planar layout as opposed to
<CODE
CLASS="CONSTANT"
>V4L2_PIX_FMT_YUYV</CODE
></DIV
><DIV
CLASS="REFSECT1"
><A
NAME="AEN5163"
></A
><H2
>Description</H2
><P
>This format is not commonly used. This is a planar
version of the YUYV format. The three components are separated into
three sub-images or planes. The Y plane is first. The Y plane has one
byte per pixel. The Cb plane immediately follows the Y plane in
memory. The Cb plane is half the width of the Y plane (and of the
image). Each Cb belongs to two pixels. For example,
Cb<SUB
>0</SUB
> belongs to Y'<SUB
>00</SUB
>,
Y'<SUB
>01</SUB
>. Following the Cb plane is the Cr plane,
just like the Cb plane.</P
><P
>If the Y plane has pad bytes after each row, then the Cr
and Cb planes have half as many pad bytes after their rows. In other
words, two Cx rows (including padding) is exactly as long as one Y row
(including padding).</P
><DIV
CLASS="EXAMPLE"
><A
NAME="AEN5170"
></A
><P
><B
>Example 2-1. <CODE
CLASS="CONSTANT"
>V4L2_PIX_FMT_YUV422P</CODE
> 4 &times; 4
pixel image</B
></P
><DIV
CLASS="FORMALPARA"
><P
><B
>Byte Order. </B
>Each cell is one byte.
                <DIV
CLASS="INFORMALTABLE"
><P
></P
><A
NAME="AEN5176"
></A
><TABLE
BORDER="0"
FRAME="void"
CLASS="CALSTABLE"
><COL
WIDTH="2*"
ALIGN="LEFT"><COL><COL><COL><COL><TBODY
VALIGN="TOP"
><TR
><TD
>start&nbsp;+&nbsp;0:</TD
><TD
>Y'<SUB
>00</SUB
></TD
><TD
>Y'<SUB
>01</SUB
></TD
><TD
>Y'<SUB
>02</SUB
></TD
><TD
>Y'<SUB
>03</SUB
></TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;4:</TD
><TD
>Y'<SUB
>10</SUB
></TD
><TD
>Y'<SUB
>11</SUB
></TD
><TD
>Y'<SUB
>12</SUB
></TD
><TD
>Y'<SUB
>13</SUB
></TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;8:</TD
><TD
>Y'<SUB
>20</SUB
></TD
><TD
>Y'<SUB
>21</SUB
></TD
><TD
>Y'<SUB
>22</SUB
></TD
><TD
>Y'<SUB
>23</SUB
></TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;12:</TD
><TD
>Y'<SUB
>30</SUB
></TD
><TD
>Y'<SUB
>31</SUB
></TD
><TD
>Y'<SUB
>32</SUB
></TD
><TD
>Y'<SUB
>33</SUB
></TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;16:</TD
><TD
>Cb<SUB
>00</SUB
></TD
><TD
>Cb<SUB
>01</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;18:</TD
><TD
>Cb<SUB
>10</SUB
></TD
><TD
>Cb<SUB
>11</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;20:</TD
><TD
>Cb<SUB
>20</SUB
></TD
><TD
>Cb<SUB
>21</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;22:</TD
><TD
>Cb<SUB
>30</SUB
></TD
><TD
>Cb<SUB
>31</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;24:</TD
><TD
>Cr<SUB
>00</SUB
></TD
><TD
>Cr<SUB
>01</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;26:</TD
><TD
>Cr<SUB
>10</SUB
></TD
><TD
>Cr<SUB
>11</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;28:</TD
><TD
>Cr<SUB
>20</SUB
></TD
><TD
>Cr<SUB
>21</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
><TR
><TD
>start&nbsp;+&nbsp;30:</TD
><TD
>Cr<SUB
>30</SUB
></TD
><TD
>Cr<SUB
>31</SUB
></TD
><TD
>&nbsp;</TD
><TD
>&nbsp;</TD
></TR
></TBODY
></TABLE
><P
></P
></DIV
>
              </P
></DIV
><DIV
CLASS="FORMALPARA"
><P
><B
>Color Sample Location. </B
>                <DIV
CLASS="INFORMALTABLE"
><P
></P
><A
NAME="AEN5271"
></A
><TABLE
BORDER="0"
FRAME="void"
CLASS="CALSTABLE"
><COL><COL><COL><COL><COL><COL><COL><TBODY
VALIGN="TOP"
><TR
><TD
>&nbsp;</TD
><TD
>0</TD
><TD
>&nbsp;</TD
><TD
>1</TD
><TD
>&nbsp;</TD
><TD
>2</TD
><TD
>&nbsp;</TD
><TD
>3</TD
></TR
><TR
><TD
>0</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
><TD
>&nbsp;</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
></TR
><TR
><TD
>1</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
><TD
>&nbsp;</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
></TR
><TR
><TD
>2</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
><TD
>&nbsp;</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
></TR
><TR
><TD
>3</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
><TD
>&nbsp;</TD
><TD
>Y</TD
><TD
>C</TD
><TD
>Y</TD
></TR
></TBODY
></TABLE
><P
></P
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